Local dev and testing

Unit tests (cw-multi-test)

Add to Cargo.toml:

[dev-dependencies]
cw-multi-test = "2.0"

use cw_multi_test::{App, Executor};
use cosmwasm_std::Addr;

#[test]
fn instantiate_works() {
    let mut app = App::default();
    let code_id = app.store_code(my_contract_wasm());
    let contract = app
        .instantiate_contract(code_id, Addr::unchecked("owner"), &init_msg, &[], "label", None)
        .unwrap();
    assert!(contract.to_string().starts_with("cosmos"));
}

Local chain

Option	Use
Local devnet	Full safrochaind on safro-devnet-1 (recommended)
Local testnet	Minimal manual init
wasmd	Upstream CosmWasm dev node

Build note: CosmWasm may require clang on your machine. See install.

Deploy loop

1. cargo test
2. cosmwasm/optimizer → .wasm
3. tx wasm store on local or testnet
4. Interact from apps against local REST